Automatic dispensing nozzle



April 1961 N. B. HENRY 2,981,299

AUTOMATIC DISPENSING NOZZLE Filed March 15, 1957 2 Sheets-Sheet l INVENTOR.

NELSON B. HENRY BYMo d m ATTORNEY April 25, 1961 N. B. HENRY AUTOMATIC DISPENSING NOZZLE 2 Sheets-Sheet 2 Filed March 15, 1957 INVENTOR.

NELSON B. HzF/VRY BY (Z2, p

A T TOR/V5 Y United tates Patent C AUTOMATIC DISPENSING NOZZLE Nelson B. Henry, Decatur, Ga, assignor, by mesne assignments, to Cydel Feldser, Atlanta, Ga.

Filed Mar. 15, 1957, Ser. No. 646,283

'16 Claims. ((11. 141-209) This invention relates to automatic dispensing nozzles, and is particularly concerned with dispensing nozzles such as used in the delivery of gasoline to motor vehicles, wherein an automatic cut-off is provided for terminating fluid flow in response to liquid level of a receiving tank. The present invention is an improvement on the structure of my previous invention set forth in Patent No. 2,702,- 659, issued on February 22, 1955, therefore this invention partakes of the objects, features and advantages set forth in my aforesaid patent application.

7 Modern requirements for valves of general type, where used for dispensing highly inflammable fluids, have become increasingly stringent. One of such requirements is that the valve must be such as to resist a fluid supply pressure greatly in excess of that heretofore encountered and in excess of that which it is practical to oppose by a normal valve spring operating to seat a valve against such pressure. Not only must such valves meet such increasing standards but constructional features must be more rugged and durable while meeting the demands of economic manufacture. Furthermore, simplicity without sacrifice of efliciency and effectiveness must be maintained if not enhanced.

In the present apparatus, applicant has succeeded in maintaining all of the advantages and objectivesof his prior patent, while, in addition thereto, providing a structure in which the valve will be seated in the direction of supply pressure and in such manner as to utilize the supply pressure in seating and maintaining seated the control valve. Thus the necessity of providing an excessive spring pressure acting against the supply pressure to seat the valve against such pressure is unnecessary. The present invention also provides a novel and improved actuating mechanism readily operable to open the valve against modern high pressure fluid supplies, and which will in general withstand the more rigid and exacting requirements of modern practice. The invention also provides a novel and improved latch mechanism'to retain the valve open independent of manual pressure, and automatic means to close the valve when predetermined liquid level has been achieved. Such mechanism also includes mechanisms whereby the act of placing the nozzle for support.

when not in use will act to insure valve closure.

It is therefore among the objects of the present invention to provide a novel and improved dispensing nozzle in which a simplified structural arrangement provides for the effective and efficient seating of the valve in the direction of fluid pressure from the fluid source and which may yet include readily releasable manual means for raising the valve against such pressure to permit the discharge of fluid. 1

Another object of the present invention is to provide, in a nozzle, improved means for sealing the reciprocating valve stem thereof so as to preclude the necessity of packing, lubricating, adjusting or repeated maintenance operations forthe mounting of such valvestems.

2,9812% a ent nn .5 .9 1

It is also an object of the present invention to provide, in a high pressure valve for dispensing nozzles, automatic means for shutting off the flow of fluid when a predetermined level of fluid is achieved, which means includes a novel seal positively precluding the flow of liquid after manual control for the valve has been re.- leased.

Another object of my invention is to provide an automatic catch arrangement for the manually operated handle of a dispensing valve, such means including an arrangement whereby the supportof the nozzle by a supporting structure will preclude retention of the valve in open position.

Numerous other objects, features and advantages of the present invention will be apparent from consideration of the following specificationtaken in conjunction with the accompanying drawing, in which:

Fig. 1 is a longitudinal cross-sectional view of one form of the present invention with the end of the nozzle broken away.

Fig. 1A is a longitudinal-cross-sectional view of the end of the nozzle.

Fig. 2 is a top plan view of the nozzle.

Fig. 3 is a cross-sectional view taken on line 3-3 of Fig. 1.

Fig. 4 is a cross-sectional view taken on line 44 of Fig. 1.

Fig. 5 is a detailed cross-sectional view taken on line 5-5 of Fig. 1.

Fig. 6 is a fragmentary bottom plan view taken on line 66 of Fig. 1.

The nozzle includes a generally cylindrical hose receiving tubular handle 10 having an internally thre ded integral hose receiving boss 11 at its outer end. The bandle 10 defines an internal cylindrical fluid passage 12; and at the opposite forward end of the handle 10' a head 13 is.

formed defining a vertical cylindrical bore 14, an opposed spring cavity 15, an intermediate circular discharge port 17 and a flat top seat 18 surrounding the outer opening of vertical bore 14. Fitted within the bore 14 is a cylindrical'plug 20 having an enlarged vacuum chamber head 21 secured on the seat 18 by screws 22. The plug 20 is formed with a central bore 23 communicating by radial ports 24 with the interior 12 of the handle 10. The lower end of the bore 23 is formed with the circular ball seat 25 which may receive a ball 26 urged upwardly by spring 27 carried within the spring cavity 15. An 0 ring 28 within a groove 29 on the upper end of the plug 20' seals the pressure head 21 with respect to the handle 10.

The head 21 is formed with upstanding annular sides 30 constituting the walls of a chamber 31 having a vacuum convex base surface 32 including a central bore 33 through which is mounted for axial movement therein the upper shank of a stem 34. The stem 34 extends upwardly into the vacuum chamber 31 while its lower end 35 protrudes beyond its intermediate stop shoulder 36. The shoulder 36 is adapted to engage a seat 37 to limit upward movement of the stem under the influence of the ball 26 and its spring 27. The chamber 31 is closed by a cover 40. secured to the sides 30 by screws 22 which also retain the head 21 upon the seat 18. The cover 40 is provided with air vents 41. Secured between the cover 40 and the sides 30, a flexible operating diaphragm 42 is mounted together with metal disc 43. The disc is adapted to engage the stem 34 to move it downwardly when a vacuum is created in chamber 31. A channel 45 leads from the chamber 31- below the diaphragm 42 to communicate with an aligned channel 46 of the forward end of handle 10.

The main valve body 50 of the present nozzle is se-. cured to the head 13 and has a neck 51 projecting into. port 17 and sealed by an O-ring 52. The neck 51 is provided with an axial port 53 leading to a valve inlet chamber 55. The upper end of chamber 55 receives a threaded spring pressure cap 57 which retains a valve spring 56. An ring 58 is provided between the outer sleeve of the cap 57 and the body to adequately seal the same. The valve chamber is formed with a conical valve seat 60 which is adapted to receive the downwardly conical face 61 of a'valve 62 the upper face of which is provided with a plate 63 secured thereto by a nut 64. The spring 56 bears against the plate 63 to normally urge the valve 62 to closed position against its seat 60. A conical valve actuating element 65 engages the lower face of the valve 62 against which the valve is secured by the plate 63. Communicating by way of the valve seat 60 with the valve chamber 55 is a passage leading into a discharge chamber 71. The element 65 is bored at its end 72. to receive the inner end 73 of avalve operating rod 74. 'Rod 74 passes through a wall of the body 50 and is surrounded by packing 75 retained by a cap 76 encircling the rod 74. The packing 75 is urged outwardly by a spring 77. I

The valve body includes an annular venturi passage 80 immediately below the conical valve seat 60 and opens into the passage 70 to the chamber 71. Passage 89 commuicates by way of duct 81 with branched ducts 83 and 84 located in the valve body 50. Duct 83 leads up and around the spring cap 57 to communicate with channel 46. Duct 84 leads outwardly to join duct 85 secured as at 86 to automatic control tube 87.

The discharge tube of the nozzle is indicated by the numeral 90 and is secured in communication with the discharge chamber 71 by a valve housing cap 91 attached by bolts 92. Within the discharge tube 90 is mounted the outerend of the. control tube 87. The outer end of the tube 90 is fitted with a side opening orifice member 93 which receives the outer terminal end of tube 87. A screw 94 having a pointed needle valve projecting into the terminal end of tube 87 provides a substantial resistance to liquid flow into tube 87 but little air flow resistance. In operation, the end 95 of the tube 90 is adapted to be inserted into a receiving receptacle. While the liquid level in the receptacle is below the end 95 of the tube, air may enter tube 87 to satisfy the demands of the venturi groove 80. When liquid reaches the end 95, however, air flow to tube 87 is cut off and suction is applied to the chamber 31, as and for the purpose hereinafter set forth and as set forth in my prior patent above referred to. 7

For opening the valve 62 for the dispensing of fluid, a hand lever is provided. The forward end 102 of the lever 100 is pivotally mounted on a pintle 103 secured between the ears 101 of the plate 91. The pintle 103 also mounts the forward ends 104 of a guard plate 105. Lever 100 is formed with a rocl pressing surface 106 on its inner face in line with the rod 74 and adjacent the pintle mounting of the lever. Beyond the surface 106 the lever 100 is formed with an inwardly. turned portion 110 and an outwardly inclined grip portionlll.

tion 111 turns inwardly at 116 to be engaged with the handle 10 by cars 117 and .a securing belt or the like as indicated at 118. Supported on the inner face of the portion there is provided an elongate shaft 120 of a latch for the lever 100. The inner end of the latch extends upwardly as at 121 to terminate in a chisel point 122. The height of point 122 is such that upon inclination of the portion 121, the point 122 will coincide with the recesses 113 or 114 to hold the grip in depressed position determined'upon the extent to which the valve has been opened. It will be noted that the normal plane of the end 121 is parallel to and aside from the plane of movement of the grip portion of the operating lever 100. Thus the lever 100 may move freely independently On the outer face of the portion 110, a shoulder 112 is i 7 formed which includes an outwardly facing, recess 113 and adjacent thereto a second recess 114. From the foregoing it will be understood that as the fingers of. the operator which may encircle the grip portion 111 of the lever raise the lever toward the handle llLthe pressure surface 106 will engage the outer extremity of the rod 74 to move the rod inwardly and thus raise the valve 62 from its seat 60 against the pressure of the spring 56.

Since it is frequently desirable to securethe valve in open position during the filling of a receptacle, and since this is especially advantageous where automatic means act to terminate the how when a predetermined liquid level is achieved, there is provided in the present device automatically operablelmeansfor retaining the handle'in its valve opening position. For this purpose 'the guard which consists of an extension 115-be1ow thegrip porof position of the latch mechanism. It will be further noted however that the shank 120 is pivotally secured by a retaining shield 124 in such manner as to permit the shank 120 to rotate on its axis. Therefore such rotation of the shank 120 on its axis will pivotally move the end 121 so as to insert the chisel point 122 in one of the notches 114 or 113 when the hand lever is moved to valve opening position.

As indicated at 125, a spring is adapted to bear against the side of the end 121, the spring being located and secured within a housing 126 in such manner as to normally urge the end 121 in a vertical position in a plane parallel to the plane of the portion 110 of the hand lever 100 so as to permit unimpeded movement of the hand lever 100 and to retain the rotated position of the shank such as to preclude engagement of point 122 within the notches 113 or 114. However, when it is desired to retain the handle in the position to which it has been moved in order to open the valve 62, the operators finger may easily contact the side of the end 121 to urge the point 122 sideways into engagement with the notches; whereupon, the operator may release portion 111 of the lever 100 and permit the latch end to take over the retaining force for the handle to retain the same in its valve opening position during the filling operation and until automatic termination thereof as hereinafter described.

. Since, in the operation of the present device, while the handle may be retained in its valve opening position by the latch mechanism, and while termination of flow may be efiected by the liquid achieving a level to immerse the lower end of the nozzle, it may occur that upon such automatic termination the nozzle will be raised and supported in the usual manner without release of the lever 100. In order to preclude such inadvertent suspension of the nozzle until the lever 100 is released, the shank 120 is provided with a second angularly extending mem her 130 adapted to extend inwardly toward the portion 10 of the nozzle in parallel relation to the inward end 121 of the same shank 120. It will be further noted that the inward vertical extending portion of the extension 115 indicated at 116 is provided with a vertical elongate opening 131. -In conventional practice the pump arrangements, with which such nozzles are frequently used, include a support flange of such dimension as to beigelceived within a slot of the nature of that shown at a s In the present structure it will be seen that, when the lever 109 is moved to valve opening position and the point 122 is tilted inwardly to engage the lever and retain it in-such position, as a consequence thereof a like tilting is imparted to the member 130 which is thus moved as indicated by broken lines in Fig. 5 in transverse inclination across the opening 131. Such transverse extension will of course preclude the admission through the opening 131 of any supporting flange. However, since member 130 is diagonally across the opening 131, it will be apparent that since substantially any bracket inserted through opening 131 will urge member 130 to its original position, disengaging point 122 from lever 100. Thus, spring 56 may urge valve 62 closed while at the same time urging lever 100 to its original position.

states It is believed that not only the structure but the operation of the present dispensing nozzle will be fully understood by those skilled in the art and more particularly by those already familiar with applicants prior invention as set forth in his previous Patent No. 2,702,659as hereinbefore mentioned. Suflice it therefore to say that in the operation of the device the end 11 of the handle will of course be engaged with a suitable source of fluid to be dispensed, as for instance motor fuel, and such connection is customarily by way of a flexible tube or hose, not shown. One of the objectives of the present invention is to provide a structure which will function with ease and etficiency under high fiuid source pressures and to this end the valve in the present nozzle is caused to be seated in the direction of fluid pressure from the source as distinct from numerous prior devices in which the valve seats against such pressure. Under modern storage and dispensing facilities, the normal fluid pressure of the source has become increasingly higher and the Underwriter Laboratories are requiring a higher de gree of security against leakage under such increasing pressures.

Fluid under pressure is thus admitted from the hose or other source to the passage 12 of the handle 10, with the valve 62 closed, the parts are as shown in Fig, 1 of the drawings. Since the spring 27 is yieldable to permit unseating of the ball and yet is such as to restrain the ball against full movement to seat against the seat 143, the ball will not be seated in such manner as to preclude .the flow of fluid should the valve be opened. In this connection attention is also directed to a pivoted ball unseating bracket member 140 which is disposed in the passage between the ball chamber 14 of the handle 10 and the valve chamber 55. This member 140 comprises a flat transversely pivoted body member having upstanding ears 141 which are pivotally supported on'a transverse rod 142 mounted in the neck portion of the member 50. It will be noted that the handle facing end of the fiuid passage cavity of the member 50 is formed with frusto-conical ball receiving seat 143, and the inner end 144 of the member 140 is such as to be disposable in the location of a ball which may be seated upon the seat. However, tilting of the member 140 will release the portion 144 from the area which may be taken by the ball after. it is so seated. The opposite and outward end 145 of the member 140 extends into position to be engaged by the peripheral edge 147 of the plate 63 of the valve 6 2when the valve is in lower closed position. 'Hence in this closed position the plate, 63 will hold the member 140 in horizontal transverse position, as indicated'in Fig. 1, with its end 144 in position to pre clude the full seating of the ball 126 against the seat 143. It will be understood, as the'operation of the valve is further discussed, that this feature precludes inadvertent seating of the ball. i

With the parts as already referred to and as indicated in Fig. 1, when the grip portion 111 of the lever 100 raised the cam surface 106 will strike the rod 74 to move the same inwardly against the tension of the spring 56 and raise the valve 62 from the valve seat 60. Fluid under pressure will then fiow through the handle and around the ball 26 and through the open valve seat 60 to be discharged through the nozzle 90. In this movement of this fiuid it will be seen that downward pressure on ball 26 is not enough to overcome spring 27 sufiiciently toseat ball 26. During the flow of fiuid through the valve and past the seat 60, an aspirating effect is produced at the venturi annulus 80 causing a suction which is relieved by the upward passage of air or gas through the tube 87 past the orifice member 93, thus relieving the suction created in the venturi annulus 80 without producing any appreciable suction in the passage 83 leading to the chamber 31.

' Assuming that the receptacle to be filled is of considerable capacity and the operator does not desire to. main! 6 tain manual pressure on the handle 111 to retain the valve open, He may upon moving the handle 111' such as to unseat the valve tilt the end 121 to cause its point 122 to be received within one of the handle notches thus to retain the lever in its valve opening position, thereupon the operator may release the lever 100 and the filling of the receptacle willcontinue until such time as the liquid level of the receptacle reaches the end of the nozzle 190, whereupon the liquid being dispensed will be received within the member 93 and preclude the further inward passage of air or gas through the tube 87.' At such time suction will be diverted from the tube 87 to the duct 83 which will then decrease the pressure within the chamber 31 causing the diaphragm 42 to move inwardly striking the rod 34 to push the ball 26 fully downward against the tension of the spring 27; and since the valve 62 is' then open and plate 63 is up, the member is free to swing and will'not preclude the full seating of the ball 26 on the seat 143, the ball will be so seated to terminate the flow of fluid in response to the rise of liquid level in the receptacle. If the operator has retained his manual grasp of the handle, this automatic operation will of course be noted through the vibration of the nozzle caused by the termination of flow in the seating of the ball. The operator will then release thegrip portion 111 permitting the valve to close. If however, the operator does not release the handle but attempts to support the nozzle by placing it upon the projections this operation will tilt the latch mechanism to release the handle, and in either event the spring 56 of the valve will move the valve 62 to seated position when the grip portion 111 has been released either man ually or automatically when the nozzle is attempted to be supported. Upon release of the grip portion 111, the

valve 62 will move outwardly by the spring tension 56 causing its plate 63 to engage the end of the member 140 to tilt the same to a position which precludes further seating of the ball 26 against the seat 143. Thus when the valve 62 is in its closed position the ball will be relieved from such seating just prior to the full closing of the valve, and in this manner fluid pressure will be relieved from the valve chamber to permit no drainage of the valve.

From the foregoing, it will be seen that the present invention provides a novel, simple, effective and efficient means for the dispensing of fiuid and for the automatic termination of such dispensing in response to liquid level. It will further be, seen that the invention provides a struc ture adapted to be actuated for closing in the direction of the pressure of the fluid source, and hence the improved structure will fully meet the requirements of the- Underwriters with respect to dispensing valves for fluids under high pressure. In carrying out the invention, it will be understood that numerous changes, modifications and the full use of equivalents may be resorted to without departing from the spirit or scope of the invention as defined in the appended claims.

I claim:

1. A liquid dispensing nozzle including a manually operable main valve closing in the direction of fluidflow, a ball'movablein the path of fluid flow in advance of said valve, a flow restraining seat for said ball, means normally urging said ball against said seat and in a direction to restrain fiuid flow tosaid valve, and means restraining said ball from movement to terminate fluid flow tosaid valve.

2. A liquid dispensing nozzle including a manually operable main valve closing in the direction of fiuid flow, a ball movable in the path of fluid flow'in advance of said valve, a flow restraining seat for said ball, means nor-v mally urging said ball against said seat and in a direction to restrain fiuid flow to said valve, and means restraining said ball from movement to terminate fiuid flow to said valve, said first mentioned means being responsive to fluid pressure. admitted to. said. nozzle.

3. A liquid dispensing nozzle including a manually "operable main valve closing in the direction of'fiuid flow,

a ball movable in the path of fluid flow in advance of said valve, a flow restraining seat for said ball, means normally urging said ball against said seat and in a direction to restrain fluid flow to said valve, and means restraining said ball from movement to terminate fluid flow to said valve, said first mentioned means being responsive to fluid pressure admitted to said nozzle and to the flow of fluid when said valve is open. 1

4. A liquid dispensing nozzle including a manually operable main valve closing in the direction of fluid flow, a ball movable in the path of fluid flow in advance of said valve, a flow restraining seat for said ball, means normally urging said ball against said seat and in a direction to restrain fluid flow to said valve, and means restraining said ball from movement to terminate fluid flow to said valve, said last mentioned means being responsive to fluid pressure admitted to said nozzle.

' 5. A liquid dispensing nozzle including a manually operable main valve closing in the direction of fluid flow, a ball movable in the path of fluid flow in advance of said valve, a flow restraining seat for said ball, means normally urging said ball against said seat and in a direction to restrain fluid flow to said valve, and means restraining said ball from movement to terminate fluid flow to said valve, said last mentioned means being responsive to fluid pressure admitted to said nozzle and to the flow of fluid when said valve is open.

6. A high pressure gasoline dispensing valve including a body defining an inlet passage, a pressure responsive ball valve in said passage, means normally urging said.

ball valve to flow-restraining position, a flow-terminating seat for said ball check valve, a manually actuated valve, means actuated by said manually actuated valve when in closed position to preclude seating of said ball valve on said flow-terminating seat, and means operable upon opening of said manually actuated valve to terminate actuation of the means to preclude seating of said ball valve.

7. A high pressure gasoline dispensing valve including a body defining an inlet passage, a pressure responsive ball valve in said passage, means normally urging said ball valve to flow-restraining position, a flow-terminating seat for said ball check valve, a manually actuated valve, means actuated by said manually actuated valve when in closed position to preclude seating of said ball valve, on said flow-terminating seat, and means operable upon opening of said manually actuated valve to terminate actuation of the means to preclude seating of said ball valve to permit seating of said ball valve when the manual valve is open.

8. A high pressure gasoline dispensing valve including a body defining an inlet passage, a pressure responsive ball valve in said passage, means normally urging said ball valve to flow-restraining position, a flow-terminating seat for said ball check valve, a manually actuated valve, means actuated by said manually actuated valve when in closed position to preclude seating of said ball valve on said flow-terminating seat, and means operable upon opening of said manually actuated valve: to terminate actuation of the means to preclude seating of said ball valve to permit seating of said ball valve when the manual valve is open, said ball valve being responsive to fluid flow.

9. A high pressure gasoline dispensing valve including a body defining an inlet passage, a pressure responsive ball valve in said passage, means normally urging said ball to flow-restraining position, a flow-terminating position, a flow-terminating seat for said ball check valve, a manually actuated valve, means actuated by said manually actuated valve when in closed position to preclude seating of said ball valve on said flow-terminating seat, and means operable upon opening of said manually actuated valve to terminate actuation of the means to preelude seating of said ball valve to permit seating of said ballvalve when the valve is open, said ball valve being responsive to fluid flow topreclude' seatingthereof when fluid flow isuninhibited. j I I v,,l0. A. nozzle comprising a valve'body having a fluid passagertherethrough, a valve seat inrsaid passage, a valve arranged to cooperate with said seat for movement in thedirection of fluidflow through said passage toterminate fluid flow through said nozzle, manual valve operating means for moving said valve from said seat, and auxiliary means for terminating fluid flow when said valve isunseated, saidauxiliary means being pressure responsive and operable by suction induced by fluid flow when the valve is unseated.

, 11. A- nozzle comprising a valve body having .a,fluid passage therethrough, a valve seat in said passage, a valve arranged to cooperate with said 'seat' for movementtin the direction of fluid flow through said passage to terminate fluid flow through said nozzle, manual valve operat ing means'for moving said valve from said seat, and auniliary means for terminating fluid flow when said valve is unseated, said auxiliary means being pressure responsive and operable by suction induced by fluid flow when the valve is unseated'to terminate flow to said valve.

12. A high pressure liquid dispenser of the type including suction means for terminating fluid flow in response to predetermined liquid level of a receiving receptacle, including a valve closable on movementin the direction of fluid pressure, manual means for opening said valve against fluid pressure, releasable meansfor retaining said manual means in valve opening position, and pressure responsive means for terminating fluid flow through said dispenser when said valve is in open position.

13. A high pressure liquid dispenser of the type including suction means for terminating fluid flow in response to predetermined liquid level of a receiving receptacle, including a valve closable on movement in the direction of fluid pressure, manual means for opening said valve against fluid pressure, releasable meansfor retaining said manual means in valve opening position, and pressure responsive means for terminating fluid flow through said dispenser when said valve is in open position, said means including a spring urged ball.

14. A high pressure liquid dispenser of the type including suction means for terminating fluid flow in response to predetermined liquid level of a receivingreceptacle, including a valve closableon movement in the direction of fluid pressure, manual means for opening said valve againstfiuid pressure, releasable means for retaining said manual means in valve opening position, and pressure responsive means for terminating fluidjflow through said dispenser when said valve is in open position. said means including a spring urged ball responsive la fluid under pressure passing through said dispenser when the valve is open. a g I 15. A high pressure liquid dispenser of the type including suction means for terminatingfluid flow in response to predetermined liquid level of'a receiving receptacle, including a valve closable on movement in the direction of fluid pressure, manual means for opening said valve against fluid pressure, releasable means for retaining said manual means in valve opening position, and pressure responsive means for terminating fluid flow through said dispenser when said valve is in open position, said means including a spring urged ball, responsive to fluid under'pressure passing through said dispenser when the valve is open together with means for precluding seating of said ball with respect to said valve when said valve is closed.

l6.A high pressure liquid dispenser of the type including suction means for terminating fluid flow in response to predetermined liquid level of a receiving receptacle, including a valve closable on movement in the direction of fluid pressure, manual means for opening 9 10 said valve against fluid pressure, releasable means for when said valve is closed, and flow responsive means for retaining said manual means in valve opening position, actuating said ball against spring or flow influence. pressure responsive means for terminating fluid flow through said dispenser when said valve is in open posi- References Cited in the file this Pate/m tion, said means including a spring urged ball respon- 5 UNITED STATES PATENTS sive to fluid under pressure passing through said dispenser when the valve is open together with means for 2582195 D uerr 1952 precluding seating of said ball with respect to said valve 2702659 Henry 1955 

